When you see 18.8 on your Z1 or Z2 screen, it is part of the normal start up sequence and should go away when the device is ready in stand by mode and showing 0.0.
If it does not go away, it could indicate that there is a defect with the display panel, and will need to be returned through the provider you purchased your machine from. Please contact your provider and they will advise you on what steps to take.
Category:
Fault/Reminder Codes